I had no bad experience when i arrived in the UK. The first time i came here 2 yrs ago on a tourist visa did spent a bit longer claiming my luggage as it's normal but, for bad treatment with the immigration officer... luckily i didn't have. I was just asked for how long will i be staying in the UK, i said 3 weeks. When he asked if i have a sponsor i said yes and i can show him the Sponsorship Letter if he wants to but, said nevermind.
The second time was last April and i remembered when the Immigration Officer looked at my visa and asked "what you're going to do after marriage?" I said then stay here and live with my husband. Then he asked "is he travelling with you?" I said no... he is outside waiting for me.... He then smiled to me and said.. Welcome to England.....